We don't have to have huge, centralized communication sites where anyone can sign up and post stuff and the operator's shielded from liability for what's posted so long as they subject a bunch of humans to it in order to filter it out, even if there's tons and tons of it posted constantly. We only have to have that in order to keep supporting the current ad-tech business models, which isn't a given.

I'm not saying if Sally starts a forum and it gets hacked and someone posts illegal stuff she should be fined or charged with anything. I'm not saying she should even be in trouble if she gives one person who turns out to be a jerkass posting rights and that person posts illegal stuff. But if she opens up public signups, gets a billion or two users, then says "well I guess I'll just have to pay a bunch of people money to look at all this gore porn that's getting posted" the rest of us should go "uh, no, you should instead just stop".